Full-automatic three-dimensional cable storage system, method, equipment and medium

Abstract

The invention discloses a full-automatic three-dimensional cable storage system, method and equipment and a medium, and belongs to the technical field of cable storage. A full-automatic three-dimensional cable storage system comprises a lifting appliance and a storage frame driving assembly, and the lifting appliance is used for lifting a cable; the storage rack is used for storing cables; the lifting appliance is mounted at the lower part of the driving assembly; the driving assembly is used for changing the spatial position of the lifting appliance; the number of the storage racks is multiple, a first hoisting gap is formed in the middle of each storage rack, multiple rails are fixedly installed on the storage racks, the multiple rails are stacked up and down, two movable trays are installed on the rails, the movable trays are used for storing cables, and the movable trays can move to the first hoisting gaps; the rail comprises the left branch rail and the right branch rail, the second hoisting gap and the first hoisting gap are reserved between the two branch rails located at the first hoisting gap, the cable storage capacity of the goods shelf can be effectively improved, and the storage space is fully utilized.

Description

Technical Field

[0001] The present invention relates to the technical field of cable storage, and more specifically to a fully automatic three-dimensional cable storage system, method, equipment and medium. Background Art

[0002] With the acceleration of industrialization and the development of urbanization, the demand and usage of cables, as an important medium for power transmission and communication, are increasing. The traditional cable storage method usually adopts flat stacking or simple shelf storage, which has the following major problems: the traditional flat stacking method occupies a large amount of ground space, and with the increasingly tight land resources today, the space utilization rate of this method is obviously insufficient; when a specific cable is needed, it is often necessary to manually search and carry it, which is not only inefficient, but also increases labor intensity and time cost.

[0003] After searching, the existing patent document with publication number CN109697594A provides a fully automatic unmanned cable drum storage system, which performs three-dimensional space identification by establishing a three-dimensional space model of the warehouse in the storage database. In the three-dimensional space model of the warehouse, the space is divided according to the row and column heights, the row is the driving direction of the vehicle, the column is the moving direction of the crane hoist, and the height is the preset number of cable layers; the space between each row and column is the maximum cable size plus the operating space of the crane hoist; a three-dimensional space identification is set at the height of the row and column of the space division, that is, the row and column height coordinates; each unit obtained by the space division corresponds to the cargo position in the warehouse management system in turn.

[0004] Although the above system can realize automatic storage of cables, the above system can only change the storage position of the cable drum on the plane through the driving control system, and does not provide a specific method for three-dimensional storage of the cable drum, and cannot effectively utilize the storage space. In order to solve the above problems and improve the efficiency and safety of cable storage, it is necessary to develop a new type of cable storage system. The system should be able to realize fully automatic three-dimensional storage of cables, improve space utilization, simplify storage and access processes, enhance management capabilities, and ensure the safety and environmental adaptability of cable storage. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] The purpose of the present invention is to provide a fully automatic three-dimensional cable storage system, method, equipment and medium to solve the problem that the traditional plane stacking method proposed in the above background technology occupies a large amount of ground space, and the space utilization rate of this method is obviously insufficient in today's increasingly scarce land resources; when a specific cable is needed, manual search and transportation are often required, which is not only inefficient, but also increases labor intensity and time cost.

[0007] 2. Technical solution

[0008] The present invention is achieved through the following technical solutions:

[0009] A fully automatic three-dimensional cable storage system, comprising a hoist, wherein the hoist is used to hoist the cable;

[0010] A storage rack, the storage rack is used to store cables;

[0011] A drive assembly, wherein the sling is installed at the lower part of the drive assembly, and the drive assembly is used to change the spatial position of the sling;

[0012] The storage racks are provided with a plurality of them, a first lifting gap is provided in the middle of the storage racks, a plurality of tracks are fixedly installed on the storage racks, the plurality of tracks are stacked up and down, two movable trays are installed on the tracks, the movable trays are used to store cables, and the movable trays can be moved to the first lifting gap; the tracks include left and right branch rails, and a second first lifting gap is reserved between the two branch rails located at the first lifting gap.

[0013] As an optional solution of the technical solution of the present application document, two fixed pallets are provided on the upper part of the storage rack, the fixed pallets are located above the track, and the two fixed pallets are respectively located on both sides of the first lifting gap.

[0014] As an optional solution of the technical solution of the present application document, the sling includes a mounting frame, which is hoisted below the driving assembly. A vertical rotating shaft is installed at the lower part of the mounting frame, and a horizontal telescopic arm is fixedly connected to the lower end of the rotating shaft, and hooks are installed at both ends of the telescopic arm.

[0015] As an optional solution to the technical solution of the present application document, the end of the telescopic arm is fixedly connected to a vertical hinge seat, the hook claw is rotatably installed on the end of the telescopic arm through the hinge seat, the two hook claws can rotate relative to each other, and a hanging part is provided on the inner side of the hook claw.

[0016] As an optional solution of the technical solution of the present application document, the rotating shaft is coaxially fixedly connected with a driven gear plate, one side of the driven gear plate is meshingly connected with a driving gear, a first drive motor is fixedly installed on the mounting frame, an output end of the first drive motor is fixedly connected to the driving gear, and the first drive motor is used to drive the rotating shaft to rotate.

[0017] As an optional solution of the technical solution of the present application document, a winding roller is rotatably mounted on the mounting frame, a suspension rope is wound around the outside of the winding roller, a suspension hook is fixedly connected to the end of the suspension rope, and the hook is used to fix the cable.

[0018] As an optional solution to the technical solution of the present application document, the driving assembly includes a transverse guide rail, a longitudinal guide rail is slidably connected to the transverse guide rail, a crane is slidably installed on the longitudinal guide rail, the sling is hoisted at the bottom of the crane, a height adjustment mechanism is installed on the crane, and the height adjustment mechanism is used to change the spatial height of the sling.

[0019] A fully automatic three-dimensional cable storage method comprises the following steps:

[0020] S1. Use the drive assembly to move the crane through the transverse and longitudinal guide rails to move the spreader to the specified position.

[0021] S2, using the first drive motor to drive the rotating shaft to rotate, so that the telescopic arm rotates on the rotating shaft, and the telescopic arm is controlled to extend and retract as needed, and the hook claw rotates through the hinge seat to hook the cable;

[0022] S3. Fix the cable with hooks and ropes;

[0023] S4, using the drive assembly to lift the sling upwards, lift the cable, and move the crane through the transverse guide rail and the longitudinal guide rail to move the cable to the top of the storage rack;

[0024] S5, moving the movable tray on the storage rack to the first lifting gap, and placing the cable on the movable tray or directly on the fixed tray by the lifting tool;

[0025] S6. Reset the movable pallet and the sling.

[0026] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of a fully automatic three-dimensional cable storage method are implemented.

[0027] A storage medium stores a computer program, which, when executed by a processor, implements the steps of a fully automatic three-dimensional cable storage method.

[0028] 3. Beneficial effects

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present application arranges a movable pallet and a track on the shelf so that the movable pallet can be moved to the first lifting gap, so that the sling can place the cable on the movable pallet under the drive of the driving component, and the movable pallet moves the cable to the side of the first lifting gap for storage, which can effectively increase the cable storage capacity of the shelf and make full use of the storage space. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic diagram of the structure of the driving components of a fully automatic three-dimensional cable storage system;

[0032] Figure 2 It is a main view of the storage rack structure of a fully automatic three-dimensional cable storage system;

[0033] Figure 3 It is a side view of the storage rack structure of a fully automatic three-dimensional cable storage system;

[0034] Figure 4 It is a schematic diagram of the structure of the spreader of a fully automatic three-dimensional cable storage system;

[0035] Figure 5 It is a use status diagram of the spreader structure of a cable fully automatic three-dimensional storage system;

[0036] In the figure: 1. sling; 101. mounting frame; 102. rotating shaft; 103. telescopic arm; 104. hook; 105. articulated seat; 106. driven gear plate; 107. driving gear; 108. first driving motor; 109. winding roller; 110. lifting rope; 111. hook; 2. storage rack; 201. first lifting gap; 202. track; 2021. second first lifting gap; 203. movable pallet; 204. fixed pallet; 3. driving assembly; 301. transverse guide rail; 302. longitudinal guide rail; 303. crane. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0038] Embodiment 1:

[0039] See also Figure 1 , the present invention provides a technical solution:

[0040] A fully automatic three-dimensional cable storage system, comprising:

[0041] Lifting device 1, which is used for lifting cables;

[0042] Storage rack 2, storage rack 2 is used to store cables;

[0043] A driving assembly 3, the sling 1 is installed at the lower part of the driving assembly 3, and the driving assembly 3 is used to change the spatial position of the sling 1;

[0044] like Figure 2 and Figure 3As shown, there are multiple storage racks 2, and multiple storage racks 2 are arranged in a row. A first lifting gap 201 is provided in the middle of the storage rack 2 to provide space for the vertical displacement of the sling 1. Multiple rails 202 are fixedly installed on the storage rack 2. The multiple rails 202 are stacked up and down. Two movable trays 203 are installed on the rails 202. The movable trays 203 are used to store cables. The movable trays 203 can be moved to the first lifting gap 201; the rails 202 include left and right branch rails, and a second first lifting gap 2021 is reserved between the two branch rails at the first lifting gap 201 to provide space for the vertical displacement of the sling 1. Two fixed trays 204 are provided on the upper part of the storage rack 2. The fixed trays 204 are located above the rails 202, and the two fixed trays 204 are respectively located on both sides of the first lifting gap 201.

[0045] By respectively arranging the movable tray 203 and the fixed tray 204 at different heights of the storage rack 2, the volume ratio of the storage rack 2 can be increased, which is conducive to making full use of the space. The driving component 3 can transfer the cable to the top of the storage rack 2 through the sling 1. When the cable needs to be placed on the fixed tray 204, since there is no obstruction above the fixed tray 204, the sling 1 can be controlled by the driving component 3 to place the cable directly above the fixed tray 204. When the cable needs to be placed on the movable tray 203, the movable tray 203 needs to be moved to the first hoisting gap 201 in the middle of the storage rack 2 through the track 202, and then the sling 1 is controlled to move downward through the driving component 3, so that the cable can pass through the first hoisting gap 201 and the second first hoisting gap 2021, and the cable is placed on the movable tray 203. Finally, the movable tray 203 is moved to the side of the first hoisting gap 201 through the track 202 to realize the storage of the cable.

[0046] Preferably, the driving assembly 3 includes a transverse guide rail 301, a longitudinal guide rail 302 is slidably connected to the transverse guide rail 301, a trolley 303 is slidably installed on the longitudinal guide rail 302, the sling 1 is hoisted at the bottom of the trolley 303, and a height adjustment mechanism is installed on the trolley 303, and the height adjustment mechanism is used to change the spatial height of the sling 1. The longitudinal guide rail 302 can move on the transverse guide rail 301 to change the lateral position of the sling 1, the trolley 303 can move on the longitudinal guide rail 302 to change the longitudinal position of the sling 1, and the trolley 303 can adjust the spatial height of the sling 1 through the height adjustment mechanism, thereby realizing the free movement of the sling 1. The height adjustment mechanism can be a winch.

[0047] like Figure 4 and Figure 5As shown, the sling 1 includes a mounting frame 101, which is hoisted below the driving assembly 3. A vertical rotating shaft 102 is installed at the lower part of the mounting frame 101. A horizontal telescopic arm 103 is fixedly connected to the lower end of the rotating shaft 102. Hooks 104 are installed at both ends of the telescopic arm 103. A vertical hinge seat 105 is fixedly connected to the end of the telescopic arm 103. The hooks 104 are rotatably mounted on the end of the telescopic arm 103 through the hinge seat 105. The two hooks 104 can rotate relative to each other. A hanging part is provided inside the hooks 104. The telescopic arm 103 can adjust the spacing between the hooks 104 according to the size of the cable; when the driving assembly 3 controls the sling 1 to move downward, the hanging part of the hook 104 can interact with the outside of the cable and push the hook 104 outward to rotate, so that the hook 104 can slide along the outer surface of the cable and can hook the cable under the action of gravity.

[0048] The rotating shaft 102 is coaxially fixedly connected with a driven toothed disc 106, one side of the driven toothed disc 106 is meshedly connected with a driving gear 107, and a first driving motor 108 is fixedly installed on the mounting frame 101. The output end of the first driving motor 108 is fixedly connected with the driving gear 107, and the first driving motor 108 is used to drive the rotating shaft 102 to rotate. When the placement direction of the cable cannot meet the lifting requirements of the lifting device 1, the driving gear 107 can be driven to rotate by the first driving motor 108, and the direction of the hook 104 can be changed by means of the driven toothed disc 106 and the rotating shaft 102 to adapt to the placement direction of the cable.

[0049] In addition, a winding roller 109 is rotatably mounted on the mounting frame 101, a hanging rope 110 is wound around the outside of the winding roller 109, and a hanging hook 111 is fixedly connected to the end of the hanging rope 110, and the hanging hook 111 is used to fix the cable. When the cable is hoisted, the hanging rope 110 and the hanging hook 111 can be used to further fix the cable to prevent the cable from accidentally falling and causing safety accidents.

[0050] Embodiment 2:

[0051] The present invention provides a fully automatic three-dimensional cable storage method, which is applied to a fully automatic three-dimensional cable storage system described in Example 1, and comprises the following steps:

[0052] S1, using the driving assembly 3 to move the crane 303 through the transverse guide rail 301 and the longitudinal guide rail 302, so that the spreader 1 moves to the specified position,

[0053] S2, using the first driving motor 108 to drive the rotating shaft 102 to rotate, so that the telescopic arm 103 rotates on the rotating shaft 102, and the telescopic arm 103 is controlled to extend and retract as needed, and the hook 104 rotates through the hinge seat 105 to hook the cable;

[0054] S3, using the hook 111 and the rope 110 to fix the cable;

[0055] S4, lift the sling 1 upwards by using the driving assembly 3 to lift the cable, and move the crane 303 by using the transverse guide rail 301 and the longitudinal guide rail 302 to move the cable to above the storage rack 2;

[0056] S5, moving the movable tray 203 on the storage rack 2 to the first lifting gap 201, and the lifting device 1 places the cable on the movable tray 203, or directly places it on the fixed tray 204;

[0057] S6. Reset the movable tray 203 and the lifting device 1.

[0058] By adopting this method, the problem that the traditional flat stacking method occupies a large amount of ground space can be solved. However, with the increasingly scarce land resources today, the space utilization rate of this method is obviously insufficient; when a specific cable is needed, manual search and transportation are often required, which is not only inefficient, but also increases labor intensity and time cost.

[0059] Embodiment 3:

[0060] The present invention provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of a fully automatic three-dimensional cable storage method in Example 2 are implemented.

[0061] Embodiment 4:

[0062] The present invention provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of a cable fully automatic three-dimensional storage method in embodiment 2 are implemented.

[0063] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal connection between two elements or interaction between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature means that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature means that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described are combined in a corresponding manner in any one or more embodiments or examples. In addition, those skilled in the art will combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0067] Any process or method description in the flowchart or otherwise described herein is understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions are not performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0068] The logic and / or steps represented in the flowchart or otherwise described herein, for example, are considered to be an ordered list of executable instructions for implementing logical functions, embodied in any computer-readable medium for use by an instruction execution system, device or apparatus such as a computer-based system, a system including a processor, or other system that fetches instructions from the instruction execution system, device or apparatus and executes the instructions, or for use in conjunction with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" is any device that contains, stores, communicates, propagates or transmits a program for use by an instruction execution system, device or apparatus or in conjunction with these instruction execution systems, devices or apparatuses. A more specific example non-exhaustive list of computer-readable media includes the following: an electronic device with one or more wiring electrical connections, a portable computer disk cartridge magnetic device, a random access memory R display electronic glass furnace system, control method, electronic device and medium M, a read-only memory ROM, an erasable and programmable read-only memory EPROM or flash memory, an optical fiber device, and a portable compact disk read-only memory CDROM. In addition, the computer-readable medium is even the paper or other corresponding medium on which the program is printed, since the program is obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting or processing in another suitable manner if necessary, and then storing it in the computer memory.

[0069] It should be understood that the various parts of the present invention are implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, a plurality of steps or methods are implemented by software or firmware stored in a memory and executed by a corresponding instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a corresponding combinational logic gate circuit, a programmable gate array PG display electronic glass furnace system, a control method, an electronic device and a medium, a field programmable gate array FPG display electronic glass furnace system, a control method, an electronic device and a medium, etc.

[0070] A person skilled in the art would understand that all or part of the steps carried out in the above-mentioned embodiment method are implemented by instructing related hardware through a program, and the program is stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0071] In addition, each functional unit in each embodiment of the present invention is integrated into a processing module, each unit exists physically separately, or two or more units are integrated into one module. The above-mentioned integrated module is implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it is also stored in a computer-readable storage medium.

[0072] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the present invention.

Claims

1. A fully automatic three-dimensional cable storage system, characterized in that: include A lifting device (1), wherein the lifting device (1) is used for lifting cables; A storage rack (2), wherein the storage rack (2) is used to store cables; A driving assembly (3), the sling (1) being mounted at the bottom of the driving assembly (3), and the driving assembly (3) being used to change the spatial position of the sling (1); The storage rack (2) is provided with a plurality of them, a first lifting gap (201) is provided in the middle of the storage rack (2), a plurality of tracks (202) are fixedly installed on the storage rack (2), the plurality of tracks (202) are stacked up and down, two movable trays (203) are installed on the tracks (202), the movable trays (203) are used to store cables, and the movable trays (203) can be moved to the first lifting gap (201); the track (202) includes two left and right branch rails, and a second first lifting gap (2021) is reserved between the two branch rails located at the first lifting gap (201).

2. The fully automatic three-dimensional cable storage system according to claim 1, characterized in that: Two fixed trays (204) are provided on the upper part of the storage rack (2); the fixed trays (204) are located above the track (202); and the two fixed trays (204) are respectively located on both sides of the first lifting gap (201).

3. The fully automatic three-dimensional cable storage system according to claim 1, characterized in that: The lifting device (1) comprises a mounting frame (101), wherein the mounting frame (101) is mounted below the driving assembly (3), a vertical rotating shaft (102) is mounted at the lower portion of the mounting frame (101), a horizontal telescopic arm (103) is fixedly connected to the lower end of the rotating shaft (102), and hook claws (104) are mounted at both ends of the telescopic arm (103).

4. The fully automatic three-dimensional cable storage system according to claim 3, characterized in that: The end of the telescopic arm (103) is fixedly connected to a vertical hinge seat (105), and the hook claw (104) is rotatably mounted on the end of the telescopic arm (103) via the hinge seat (105). The two hook claws (104) can rotate relative to each other, and a hanging portion is provided inside the hook claw (104).

5. The fully automatic three-dimensional cable storage system according to claim 3, characterized in that: The rotating shaft (102) is coaxially fixedly connected with a driven gear disc (106), one side of the driven gear disc (106) is meshingly connected with a driving gear (107), a first driving motor (108) is fixedly mounted on the mounting frame (101), an output end of the first driving motor (108) is fixedly connected with the driving gear (107), and the first driving motor (108) is used to drive the rotating shaft (102) to rotate.

6. The fully automatic three-dimensional cable storage system according to claim 3, characterized in that: A winding roller (109) is rotatably mounted on the mounting frame (101), a suspension rope (110) is wound around the outside of the winding roller (109), and a suspension hook (111) is fixedly connected to the end of the suspension rope (110), and the suspension hook (111) is used to fix the cable.

7. The fully automatic three-dimensional cable storage system according to claim 1, characterized in that: The driving assembly (3) comprises a transverse guide rail (301), a longitudinal guide rail (302) is slidably connected to the transverse guide rail (301), a crane (303) is slidably mounted on the longitudinal guide rail (302), the sling (1) is hoisted at the bottom of the crane (303), a height adjustment mechanism is mounted on the crane (303), and the height adjustment mechanism is used to change the spatial height of the sling (1).

8. A fully automatic three-dimensional cable storage method, characterized in that: A fully automatic three-dimensional cable storage system as described in any one of claims 1 to 7, comprising the following steps: S1, using the driving assembly (3) to move the crane (303) via the transverse guide rail (301) and the longitudinal guide rail (302), so as to move the sling (1) to a designated position, S2, using the first driving motor (108) to drive the rotating shaft (102) to rotate, so that the telescopic arm (103) rotates on the rotating shaft (102), and the telescopic arm (103) is controlled to be extended and retracted as required, and the hook claw (104) rotates through the hinge seat (105) to hook the cable; S3, fixing the cable using the hook (111) and the rope (110); S4, using the driving assembly (3) to lift the lifting device (1) upwards, lift the cable, and use the transverse guide rail (301) and the longitudinal guide rail (302) to move the crane (303) to move the cable to the top of the storage rack (2); S5, moving the movable tray (203) on the storage rack (2) to the first lifting gap (201), and the lifting device (1) placing the cable on the movable tray (203), or directly placing it on the fixed tray (204); S6. Reset the movable tray (203) and the sling (1).

9. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of a fully automatic three-dimensional cable storage method as claimed in claim 8 are implemented.

10. A storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the steps of a fully automatic three-dimensional cable storage method as claimed in claim 8 are implemented.

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